#include <bits/stdc++.h>
using namespace std;
int main(){
    char s1,s2,s3; cin >> s1 >> s2 >> s3;
    if(s2 == '?') cout << "14" << endl;
    else if(s2 == '2') cout << "4" << endl;
    else if(s2 == '3') cout << "1" << endl;
}